吉首大学学报（自然科学版）2025，Vol.46Issue(5)：53-58,6.DOI:10.13438/j.cnki.jdzk.2025.05.008
轨道Kagome声子晶体中的多极角态
Multipole Corner States and Edge States of the Orbital Kagome
摘要
Abstract
To study the orbital topological states in phonon crystals,a special orbital Kagome lattice sup-porting p orbitals was constructed by connecting disc-shaped acoustic cavities with a pair of parallel cou-pling tubes,and the corner states of the Kagome lattice in the p orbital mode were explored.The results show that the lattice corner states are rich in both types and quantities,and are divided into type Ⅰ cor-ner states and type Ⅱ corner states,with a total of 24.Type Ⅰ corner states are formed by the orbital in-teractions between the two outermost atoms.There are four types(Type Ⅰ σ-symmetric corner states,type Ⅰ σ-antisymmetric corner states,type Ⅰ π-symmetric corner states,and type Ⅰ π-antisymmet-ric corner states).Type Ⅱ corner states are corner states that do not rely on long-range coupling.There are also four types,including type Ⅱ σ symmetric corner state,type Ⅱ σ antisymmetric corner state,Type Ⅱ π symmetric corner state and Type Ⅱ π antisymmetric corner state.关键词
Kagome晶格/拓扑绝缘体/轨道/角态Key words
Kagome lattice/topological insulator/orbit/corner state分类
数理科学引用本文复制引用
谢文杰,王小云,孔鹏,邓科..轨道Kagome声子晶体中的多极角态[J].吉首大学学报（自然科学版）,2025,46(5):53-58,6.基金项目
湖南省自然科学基金资助项目(2025JJ60016) （2025JJ60016）
湖南省教育厅优秀青年项目(24b0317) （24b0317）
